Umbrage

Umbrage originally meant 'shadow' from the Latin 'umbra'

  

um·brage noun - Origin: 1400–1459

• leaves that afford shade, as the foliage of trees.
• shade or shadows, as cast by trees.
• a shadowy appearance or semblance of something. 

Synonyms  pique, grudge, resentment.

offense; annoyance; displeasure:
to feel umbrage at a social snub; to give umbrage to someone; to take umbrage at someone's rudeness.

the slightest indication or vaguest feeling of suspicion, doubt, hostility, or the like.

  

It can also be a colour !!